Performance Tuning Guide

Intel Desktop Board DH67BL Performance Tuning Guide
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3.5.1.4 Sustained Mode Time
This is the time window in which the real time burst mode power is averaged to create
the Sustained Mode Power Limit below. One second is a good initial setting. Setting
this time too long will exceed the capability of the processor heat sink and may result
in excess processor heating and subsequent throttling (frequency reduction) to reduce
the temperature. A longer time interval in sustained mode may result a longer time
interval out of sustained mode while accumulated processor heat is being dissipated.
3.5.1.5 Sustained Mode Power Limit
Set the Sustained Mode Power Limit (TDP) for turbo mode. You will have to adjust the
TDP to suit your environment such that the processor does not throttle due to excess
processor heating at peak performance conditions. If the processor temperature
increases steadily while running under load, the processor cooling capability to
dissipate heat is being exceeded and you will need to reduce the TDP power limit to
prevent throttling. The Intel HD Graphics is a factor in the amount of power used. If
Intel HD Graphics is overclocked and this value is not increased, this may limit turbo
performance of the processor cores as Intel HD Graphics may take more of the power
budget.
3.5.1.6 IGD Current Limit
This is a sister function to TDC. TDC is the amount of current allowed from the
processor VR for the execution cores, IGD current is the amount of current allowed
from the graphics VR for the Intel HD Graphics portion. It may need to be increased
to not limit Intel HD Graphics overclocking. Thermals will need to be monitored to
ensure throttling does not occur.